/// <summary>
/// A navigation point must take responsibility for evaluating equality tests.
/// </summary>
public void EqualityTest()
{
Assert.IsTrue(p1.Equals(p1));
Assert.IsFalse(p1.Equals(p2));
Assert.IsFalse(p1.Equals("not an INavigationPoint..."));
Assert.AreNotEqual(p1.GetHashCode(), p2.GetHashCode());
}